"Americans have overwhelmingly spoken out against the Trump Administration's unprecedented attempt to shut down our national monuments," said Patagonia CEO Rose Marcario in a statement. "We've fought to protect these places since we were founded and now we'll continue that fight in the courts."

The company also posted a message on its homepage that was highly critical of President Trump's decision to cut the size of the monuments.

"In an illegal move, the president just reduced the size of Bears Ears and Grand Staircase-Escalante National Monuments," read a message in small font. "This is the largest elimination of protected land in American history."

A screenshot taken from the homepage for the clothing company Patagonia, Dec. 4, 2017. (Photo: Patagonia)

A link directed the reader to graphics depicting the planned reductions to Bears Ears National Monument and Grand Staircase National Monument. Beneath the graphics is an entry explaining "Why Patagonia is in the fight to protect public lands."

Patagonia has been in the fight to protect public lands for almost 30 years— and we are proud to have played a part in the establishment of several national monuments, including Bears Ears National Monument in Utah and Basin and Range and Gold Butte National Monuments in Nevada. We are also proud to stand alongside over 350 businesses, conservation groups and Native American tribes that have come together on this issue to protect public lands. Climbers, hikers, hunters and anglers all agree that public lands are a critical part of our national heritage and these lands belong not just to us, but to future generations.